A fast, unobtrusive and modern cross-platform GUI toolkit. Agar fully exploits hardware acceleration where available, but also supports simple frame-buffer interfaces. Agar is stand-alone and easily portable to new platforms and graphics systems.

Emulator of Atari 800/800XL/130XE/5200 with various extensions (1088kB RAM, stereo sound and much more) running on just about every operating system (Unix/Linux, Windows, DOS, TOS, MacOS, Workbench, WinCE...)

This is ATARI XE/XL game ported to Linux. This game was very popular and was one of the greatest ATARI games. You can see similarities to sokoban, but this game has more features like shooting, unfriendly animals.... SDL, SDL_image, SDL_mixer and SDL_ttf